Method of mounting a bottom wall in cylindrical containers



Feb. 8, 1955 E, E 2,701,506

METHOD OF MOUNTING A BOTTOM WALL IN CYLINDRICAL CONTAINERS Filed Feb. 10, 1954 h 4 I jive/5%? 4 1W 42% United States Patent METHOD OF MOUNTING A BOTTOM WALL IN CYLINDRICAL CONTAINERS Marshall E. Gazette, Weymouth, Mass.

Application February 10, 1954, Serial No. 409,458

1 Claim. (Cl. 9355.1)

This invention relates to a method of mounting a circular bottom wall in a tubular member to form a cylindrical container. More particularly, the invention relates to cylindrical paper cartons of the kind often used for packaging foodstuffs which may be semi-liquid. An object of the invention is to secure a bottom in a tube with a suitable adhesive without getting any of the adhesive on the inner wall surface of the tube which may be touched by the contents of the container. As hereinafter described this is done by nesting two rings to ht within an end of the tubular member as a support for the disc which is to be the bottom of the container. Adhesive is applied to an edge of one of the rings before the parts are assembled.

For a more complete understanding of the invention reference may be had to the following description thereof and to the drawing, of which- Figure 1 is an isometric view of a container made in accordance with the invention, a portion being broken away to show in section;

Figure 2 is an isometric view of two rings employed to support the bottom disc;

Figure 3 is a fragmentary elevation of a partially completed container, part being broken away to show in section; and

Figures 4 and 5 are fragmentary sectional views, on a larger scale, showing subsequent steps in the method of assembling the container.

In assembling the parts of the container shown in Figure 1, two paper rings 10 and 12, which are actually short tubular sections of equal length and which nest snugly one within the other, are assembled as indicated in Figure 3. The larger ring 12 is adapted to fit snugly within a tube section 14 which constitutes the side Walls of the container. The rings 10 and 12 are assembled in axially offset relation and a bead or film of suitable liquid adhesive 16 is applied to an edge of the ring 10.

A disc 20 having a diameter substantially equal to the inner diameter of the tube 14 is inserted in the tube. The nested rings 10 and 12 are inserted in the tube below the disc until the bottom edge of the ring 12 is flush with the bottom edge of the tube 14. With these assembled parts resting on a flat surface (not shown) the disc 20 is pushed down against the upper edge of the ring 10 (Figure 4), then is pressed down until the edges of the rings 10 and 12 are flush with the lower edge of tube 14 (Figure 5). The disc 20 squeezes some of the adhesive 16 radially so that it spreads to the top edge of the ring 12 and to a narrow area of the inner wall of the tube 14 immediately below the disc 20, as indicated at 22 in Figure 5. When the adhesive dries or sets, it secures the assembled parts together firmly. By assembling the parts as described, none of the adhesive touches any surface of the tube 14 or disc 20 which can be touched by the contents of the container when filled.

I claim:

The method of assembling a cylindrical container which comprises nesting two short tubular sections of equal length so that they are axially offset, coating the projecting end edge of the inner of said tubular sections, inserting said sections into an end of a piece of tube having an interior diameter equal to the outer diameter of the outer of said tubular sections, inserting in the other end of said tube a disc having a diameter equal to the inner diameter of the tube and pressing said disc against the tubular sections until the remote end edges of said sections are both flush with the end of said tube.

No references cited. 

